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Sunday, May 20, 2018

F5LVG's Nail Board Receiver -- Names for the Technique


Pete WB9FLW reminds us that Olivier F5LVG has LONG been using copper nails and wood boards to build amazing rigs.  See above for one magnificent example.  That, my friends, is a superhet receiver.  Inspirational! 


A few posts back we asked for nominations for the official name of this technique.   We still have to consult with Steve Silverman on this, but the nominations are: 

Armand WA1UQO (perhaps reflecting his proximity to Washingotn DC)  "Wire-Tapping" 

Gary Hinson:  "Coffin Dodging"  (sounds a bit dodgy to me). 

And the front runner so far, from Melbourne, Australia -- drum roll please: 

Peter Parker:  "NAILBOARDING."  (Peter thinks he nailed it with that one.  I tend to agree.)  

Wednesday, May 16, 2018

Youngest Homebrew Hero: 17 year-old Sam Zeelof Makes His Own Integrated Circuits


Seventeen year-old Sam Zeelof, KD2ENL, is making his own integrated circuits in his garage. 

Wow.  This makes me think about another seventeen year-old -- the fellow who appears on pages 63-64 of Cliff DeSoto's "200 Meters and Down." (I have the story on page 81 of "SolderSmoke -- Global Adventures in Wireless Electronics.")   In the early days of radio that kid amazed us by making his own vacuum tubes.  Sam Zeelof is clearly following in that tradition. 

No "mysterious black boxes" for Sam!  No "appliance chips" for him!  FB OM.  

This is really amazing.  Here are the links: 

https://spectrum.ieee.org/semiconductors/devices/the-high-school-student-whos-building-his-own-integrated-circuits


One of Sam's chips
Thanks to Bruce KC1FSZ for alerting us to this amazing work. 

Sunday, May 13, 2018

A Construction Technique that REALLY "Nails it" -- But what do we call it?


Thanks to Rogier PA1ZZ (long in W6) for this.  I guess I have used a variation of this technique in some antenna tuner projects, and maybe in a crystal radio effort.   This also reminded both Pete and me of the electronic project kits that we were given as kids.  Those kits had little springs that were supposed to keep the components in contact.  They might have worked better with nails.  

This technique definitely provides an opportunity for an earnest young guy to make use of his soldering GUN.  I don't think a wimpy 35 watt iron would be up to the task.  


What should we call this technique?  We have "ugly" and "Manhattan" and
"Muppet Boards."   What do we call this? 










Saturday, May 12, 2018

NN2K's Beautiful Pine-Board Al-Fresco Thermatron AM Transmitter


On Saturday mornings (around dawn) I often listen to the Old Military Radio Net on 3885 kHz.  I find it inspirational.  This morning the inspiration was provided by Rick NN2K.  His signal from Binghamton New York was makeing the trip to Northern Virginia.  When I heard him mention that he was using a "Pine Board Transmitter" I felt the urge to look for a picture.  QRZ.com provided the photo.  

Rich says he built this rig in January 2018 based on a QST article by Bob Heil.   FB Rich! 
And thanks to Ted W3PWW for running the Old Military Radio Net for so many years. 


Tuesday, May 8, 2018

KE4MIQ's Repurposed Raduino Receiver


FB James -- Really glad you are listening,  and that you are having fun with a Direct Conversion receiver --- souped up with a Raduino! 


Bill, Pete

Just listened to #204. (New Listener)
You talked about using the Raduino with other radios.
I bought one of Mike Hagen's RaduinoXs to use with my Bitx40. So, I have repurposed my original Raduino as a VFO for my 4SQRP ZZRX-40 DC receiver. I used Allards's v1.26 with a few code changes to tune 7.000 to 7.300. It's currently al fresco on a piece of Hobby Lobby foam board. I may "cabinetize" at some future date.
Attached is a pic of the ZZRX-40, Raduino, and Goodwill Sony speaker with Jameco stereo amp, all running off of Harbor Freight 9v Nimh rechargables.

So far I have heard over 40 states and 20 countries with a 65ft piece of wire in the rafters.
73s
James
KE4MIQ

Saturday, May 5, 2018

SolderSmoke Podcast #204 April 1, SPRAT Cover 2, uBITX mania, MAILBAG


SolderSmoke Podcast #204 is available! 

http://soldersmoke.com/soldersmoke204.mp3

5 May 2018

April 1 Recap -- We thank you for your support! 

Pete's Rig on Cover of SPRAT 174 

uBITX Mania

uBITX Dual Conversion Design

uBITX Gettng more out of the Arduino/Si5351 combo

uBITX KD8CEC's amazing software

uBITX Future Possibilities

uBITX On-the-Air Experiences, with CW too! 

MAILBAG

KD8CGH's Hyderabox -- THERE ARE TWO! 
QSO with N1AW's cardboard uBITX
DuWayne on QSO TODAY
Jack 5R8SV -- Radio Gods NOT Happy
Jack Purdum W8TEE -- Thanks OM
Charles AI4OT
Chris KB4PBT 15 inch telescope
John WJ0NF Reading SolderSmoke
Ken W8KTP Ordering a uBITX 
Darren KG7KOI  Listening
Gary AK4NA  New Word:  "Cabinetize" FB OM! 


Sunday, April 29, 2018

"The Thrill That'll Hit Ya..." AGAIN! Three cheers for Pete, SPRAT, and GQRP


On the cover of issue 173 of our beloved SPRAT magazine they had my little Direct Conversion receiver.  We joked on the podcast about the old song by Doctor Hook about getting on the "Cover of the Rolling Stone."  Well, on the cover of issue 174 they have one of Pete's magnificent creations.  

Thanks again to the guys who put so much work into SPRAT magazine.  They are now looking for some help.  Please subscribe, and check out page 4 of issue 174 for details on the help that GQRP is looking for.  


Designer: Douglas Bowman | Dimodifikasi oleh Abdul Munir Original Posting Rounders 3 Column